Question

calculati:a)0,2·5 supra 7 +11 supra 14

Answer 1

Răspuns:  13/14

Explicație pas cu pas:

$\displaystyle 0,2 \ \cdot \ \frac{5}{7} \ + \ \frac{11}{14} \ = \\ \\\displaystyle \frac{2}{10} \ \cdot \ \frac{5}{7} \ + \ \frac{11}{14} \ = \\ \\\\\displaystyle \ \frac{2}{14} \ + \ \frac{11}{14} \ = \\ \\\\\displaystyle \ \frac{2 \ + \ 11 }{14} \ = \\\\\\\\\displaystyle \ \frac{ 13 }{14}$